Females mature in 60 to 325 days (average is about four months).

Females mature later than males and reach a larger size.

Females can mature in their first year, although this is unusual and would occur only at very low population levels.

The females mature slowly and require decades to reach sexual maturity.

However, in the North Sea, most females mature at 3 years.

Males and females mature when they are 80 to 98 cm (31 to 39 inches) long.

Females mature in 3 to 4 years and have an average life span of 15 to 25 years.

Females do not mature for 2 years and remain with their parents for the extra year.

You must know that females mature earlier than males.

Females usually mature by age five and produce between 60,000 and 103,000 eggs.